Disk-harrow



R. W. BARBIE.v

DISK HARROW Patented June'2,1891.

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UNITED STATES PATENT OFFICE.

ROBERT IV. IIARDIE, OF ALBANY, NElV YORK, ASSIGN OR TO SAMUEL O. COBB, OF .IANESVILLE, IVISOONSIN.

DISK-HARROW.-

SPECIFICATION forming part of Letters Patent No. 453,284, dated J une 2, 1891.

Application filed November 15, 1890. Serial No. 371,524. (No model.)

To @ZZ whom it may concern:

Be it known that I, ROBERT IV. HARDIE, a citizen of the United States, residing at Albany, in the county of Albany and State of New York, have invented certain new and usefulImprovements in Disk Harrows; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide means for limiting the upward movement of the free ends of a disk-gang, and also forsustaining the end pressure exerted on said gang when set at an angle to the line of progression of the machine. This I accomplish by substantially the means illustrated in the accompanying drawings, in which- Figure l is a plan view of a disk harrow embodyinginyinveniion. Fig. 2 is a vertical section of the same, taken on line l l of Fig. l, showing also a side view of some of the parts. Fig. 3 is a rear view of one end of a disk-gang.

As illustrated in the drawings, the main frame ot the harrow is composed ofa pole A, a cross-bar B, secured to the pole and projecting laterally therefrom, braces b, secured to the pole and outer ends of the cross-bar, and draft-bars O, extending rearwardly from' the cross-bar.

Each disk-gang is shown as consisting of a series of cutting disks F and separatingspools E, mounted upon an axle-rod M, which is provided at one end with an enlarged head m and at the other end with a threaded nut m', by means of which the disks and spools are secnredin place. The disk-gangs are also provided with standards G and II, having a bar K, secured to their upper ends and bearing-boxes N on their lower ends adapted to engage with the spools E and form journalbearings for the disk-gangs. The disk-gangs are arranged in rear of the main frame and may be pivoted to said frame in any suitable manner which will permit of both vertical and lateral movement of the free ends of the gangs. In this instance I have formed a lug h on the standard II, which is interposed between the upper and lower draft-bars C. A pin c isv passed vertically through a hole formed in the lug 7L and on the rear ends of the bar C, so as to form a hinge connection allowing the free end of the disk-gang to be moved backward and forward. By making the hole in the lug larger than the pin c suficient looseness of t-hejoint will be produced to allow the free end of the gang to move vertically. Any other lexiblejointhaving similar capabilities may be used instead, however, without departing from myinvention. Rearwardly-extending bars D are secured at their foreward ends to some portion of the main frame, preferably to the pole, and curved backward to correspond with the sweep of the free ends of the disk-gangs. \Vhen the disk-gangs lie in a horizontal plane their free ends are in contact with the under side of the bars D, and further upward movement of said ends of the gangs is thereby prevented; but they are permitted to drop downward below said bars so as to enter a dead-furrow.

NVhen the hai-row is in operation, the gangs must necessarily be set at an angle to the line of progression, as represented by dotted lines in Fig. l, and when in such position the pressnre of the earth on the face of the disks causes the inner ends ot' the gangs to press toward each other. It is therefore desirable that some means he provided for resisting said endwise pressure of the gangs. By curving the bars D, as shown, and allowing some portion of the disk-gang-such as the standard G-to bear against the sideof the bars D, the endwise pressure ofthe gangs will be resisted by said bars when the gangs are set at any desired angle to the line of progression. I have shown the ends of the bars D as engaging with a slot g, formed in the standard l, the slot being lengthened so as togpermit the free end of the gang to drop downward, for the purpose already described. I do not desire to be limited, however, to such specific construction ot that portion of the disk-gang which comes in contact with the arms D. Draft-rods J connect the free ends of the gangs with alever L, mounted on the pole A, and provided with a spring-actuated latch which engages with a notched segment- S.

1. The combination, with a main frame, of disk-gangs movable vertically and laterally ICO independently of said frame, and rem-wzudlyl extending bars curved to correspond wit-l1 the sweep of the disk-gangs and arranged so as to limit an upward but permit a. downward movement of the free ends of said gangs, substantially as shown and described.

2. The combination, with a. main frame, of disk-gangs pivoted to the main frame in rear thereof, rearwardly-extending bars curved to correspond with the sweep of the free ends of the disk-gangsand adapted to bem1 laterelly against standards seeu red to the free ends of said gangs, and draft-rods connecting the free ends of the gangs with a lever mounted on lche main frame, substantially as shown and described.

In testimony whereof I affix my signaturein presence of two witnesses.

ROBERT W. IIARDIE. Witnesses:

CHAs. H. MILLS, CHAs. F. BRIDGE. 

